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svcrdma: Rename info::ri_chunklen

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I'm about to change the purpose of ri_chunklen: Instead of tracking
the number of bytes in one Read chunk, it will track the total
number of bytes in the Read list. Rename it for clarity.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
This commit is contained in:
Chuck Lever 2020-07-17 15:05:51 -04:00
parent b704be09dc
commit bafe9c27d5
1 changed files with 15 additions and 16 deletions
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31
net/sunrpc/xprtrdma/svc_rdma_rw.c
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@ -262,7 +262,7 @@ struct svc_rdma_read_info {
unsigned int ri_position;
unsigned int ri_pageno;
unsigned int ri_pageoff;
unsigned int ri_chunklen;
unsigned int ri_totalbytes;
struct svc_rdma_chunk_ctxt ri_cc;
};
@ -726,7 +726,6 @@ static int svc_rdma_build_read_chunk(struct svc_rqst *rqstp,
int ret;
ret = -EINVAL;
info->ri_chunklen = 0;
while (*p++ != xdr_zero && be32_to_cpup(p++) == info->ri_position) {
u32 handle, length;
u64 offset;
@ -737,7 +736,7 @@ static int svc_rdma_build_read_chunk(struct svc_rqst *rqstp,
if (ret < 0)
break;
info->ri_chunklen += length;
info->ri_totalbytes += length;
}
return ret;
}
@ -754,6 +753,8 @@ static int svc_rdma_build_normal_read_chunk(struct svc_rqst *rqstp,
__be32 *p)
{
struct svc_rdma_recv_ctxt *head = info->ri_readctxt;
struct xdr_buf *buf = &head->rc_arg;
unsigned int length;
int ret;
ret = svc_rdma_build_read_chunk(rqstp, info, p);
@ -782,11 +783,10 @@ static int svc_rdma_build_normal_read_chunk(struct svc_rqst *rqstp,
* Currently these chunks always start at page offset 0,
* thus the rounded-up length never crosses a page boundary.
*/
info->ri_chunklen = XDR_QUADLEN(info->ri_chunklen) << 2;
head->rc_arg.page_len = info->ri_chunklen;
head->rc_arg.len += info->ri_chunklen;
head->rc_arg.buflen += info->ri_chunklen;
length = XDR_QUADLEN(info->ri_totalbytes) << 2;
buf->page_len = length;
buf->len += length;
buf->buflen += length;
out:
return ret;
@ -808,22 +808,20 @@ static int svc_rdma_build_pz_read_chunk(struct svc_rqst *rqstp,
__be32 *p)
{
struct svc_rdma_recv_ctxt *head = info->ri_readctxt;
struct xdr_buf *buf = &head->rc_arg;
int ret;
ret = svc_rdma_build_read_chunk(rqstp, info, p);
if (ret < 0)
goto out;
head->rc_arg.len += info->ri_chunklen;
head->rc_arg.buflen += info->ri_chunklen;
buf->len += info->ri_totalbytes;
buf->buflen += info->ri_totalbytes;
head->rc_hdr_count = 1;
head->rc_arg.head[0].iov_base = page_address(head->rc_pages[0]);
head->rc_arg.head[0].iov_len = min_t(size_t, PAGE_SIZE,
info->ri_chunklen);
head->rc_arg.page_len = info->ri_chunklen -
head->rc_arg.head[0].iov_len;
buf->head[0].iov_base = page_address(head->rc_pages[0]);
buf->head[0].iov_len = min_t(size_t, PAGE_SIZE, info->ri_totalbytes);
buf->page_len = info->ri_totalbytes - buf->head[0].iov_len;
out:
return ret;
@ -892,6 +890,7 @@ int svc_rdma_recv_read_chunk(struct svcxprt_rdma *rdma, struct svc_rqst *rqstp,
info->ri_readctxt = head;
info->ri_pageno = 0;
info->ri_pageoff = 0;
info->ri_totalbytes = 0;
info->ri_position = be32_to_cpup(p + 1);
if (info->ri_position)